The Xbox is nearly 2 years old and the sound has gone.
We did change the TV it was being played on but it worked for a couple of weeks on the new TV but hasn't worked since. I've checked the cables (briefly) and they all appear to be in properly. The games work fine but its annoying there is no sound.
Its plugged in using the 3 colour wires (white, red, yellow I think) and goes into the side of the TV rather than through a scart plug.
I'd really love to get it working again as we usually watch DVDs through it but can't at the moment.